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/*=========================================================================
Program: Visualization Toolkit
Module: vtkAreaContourSpectrumFilter.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
/**
* @class vtkAreaContourSpectrumFilter
* @brief compute an approximation of the area
* contour signature (evolution of the area of the input surface along an arc of
* the Reeb graph).
*
* The filter takes a vtkPolyData as an input (port 0), along with a
* vtkReebGraph (port 1).
* The Reeb graph arc to consider can be specified with SetArcId() (default: 0).
* The number of (evenly distributed) samples of the signature can be defined
* with SetNumberOfSamples() (default value: 100).
* The filter will first try to pull as a scalar field the vtkDataArray with Id
* 'FieldId' of the vtkPolyData, see SetFieldId (default: 0). The filter will
* abort if this field does not exist.
*
* The filter outputs a vtkTable with the area contour signature
* approximation, each sample being evenly distributed in the function span of
* the arc.
*
* This filter is a typical example for designing your own contour signature
* filter (with customized metrics). It also shows typical vtkReebGraph
* traversals.
*
* Reference:
* C. Bajaj, V. Pascucci, D. Schikore,
* "The contour spectrum",
* IEEE Visualization, 167-174, 1997.
*/
#ifndef vtkAreaContourSpectrumFilter_h
#define vtkAreaContourSpectrumFilter_h
#include "vtkFiltersGeneralModule.h" // For export macro
#include "vtkDataObjectAlgorithm.h"
class vtkTable;
class VTKFILTERSGENERAL_EXPORT vtkAreaContourSpectrumFilter :
public vtkDataObjectAlgorithm
{
public:
static vtkAreaContourSpectrumFilter* New();
vtkTypeMacro(vtkAreaContourSpectrumFilter, vtkDataObjectAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent) VTK_OVERRIDE;
//@{
/**
* Set the arc Id for which the contour signature has to be computed.
* Default value: 0
*/
vtkSetMacro(ArcId, vtkIdType);
vtkGetMacro(ArcId, vtkIdType);
//@}
//@{
/**
* Set the number of samples in the output signature
* Default value: 100
*/
vtkSetMacro(NumberOfSamples, int);
vtkGetMacro(NumberOfSamples, int);
//@}
//@{
/**
* Set the scalar field Id
* Default value: 0
*/
vtkSetMacro(FieldId, vtkIdType);
vtkGetMacro(FieldId, vtkIdType);
//@}
vtkTable* GetOutput();
protected:
vtkAreaContourSpectrumFilter();
~vtkAreaContourSpectrumFilter() VTK_OVERRIDE;
vtkIdType ArcId, FieldId;
int NumberOfSamples;
int FillInputPortInformation(int portNumber, vtkInformation *) VTK_OVERRIDE;
int FillOutputPortInformation(int portNumber, vtkInformation *info) VTK_OVERRIDE;
int RequestData(vtkInformation *request,
vtkInformationVector **inputVector, vtkInformationVector *outputVector) VTK_OVERRIDE;
private:
vtkAreaContourSpectrumFilter(const vtkAreaContourSpectrumFilter&) VTK_DELETE_FUNCTION;
void operator=(const vtkAreaContourSpectrumFilter&) VTK_DELETE_FUNCTION;
};
#endif
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